ошибка с десятичным числом в mvc3 -значение недействительно для поля

Я следую [Начало работы с ASP.NET MVC 3] [1]. И я не могу добавить/редактировать значение Price = 9,99 или 9,99. В нем говорилось :«Значение 9,99 недопустимо для цены». и «Поле «Цена» должно быть числом».

Как это исправить?

Модель:

    public class Movie
{
    public int ID { get; set; }
    public string Title { get; set; }
    public DateTime ReleaseDate { get; set; }
    public string Genre { get; set; }
    public decimal Price { get; set; }
}

public class MovieDbContext : DbContext
{
    public DbSet<Movie> Movies { get; set; }
}

Контроллер:

public class MovieController : Controller
{
    private MovieDbContext db = new MovieDbContext();

    //
    // GET: /Movie/

    public ViewResult Index()
    {
        var movie = from m in db.Movies
                     where m.ReleaseDate > new DateTime(1984, 6, 1)
                     select m;

        return View(movie.ToList()); 
    }

    //
    // GET: /Movie/Details/5

    public ViewResult Details(int id)
    {
        Movie movie = db.Movies.Find(id);
        return View(movie);
    }

    //
    // GET: /Movie/Create

    public ActionResult Create()
    {
        return View();
    } 

    //
    // POST: /Movie/Create

    [HttpPost]
    public ActionResult Create(Movie movie)
    {
        if (ModelState.IsValid)
        {
            db.Movies.Add(movie);
            db.SaveChanges();
            return RedirectToAction("Index");  
        }

        return View(movie);
    }

    //
    // GET: /Movie/Edit/5

    public ActionResult Edit(int id)
    {
        Movie movie = db.Movies.Find(id);
        return View(movie);
    }

    //
    // POST: /Movie/Edit/5

    [HttpPost]
    public ActionResult Edit(Movie movie)
    {
        if (ModelState.IsValid)
        {
            db.Entry(movie).State = EntityState.Modified;
            db.SaveChanges();
            return RedirectToAction("Index");
        }
        return View(movie);
    }

    //
    // GET: /Movie/Delete/5

    public ActionResult Delete(int id)
    {
        Movie movie = db.Movies.Find(id);
        return View(movie);
    }

    //
    // POST: /Movie/Delete/5

    [HttpPost, ActionName("Delete")]
    public ActionResult DeleteConfirmed(int id)
    {            
        Movie movie = db.Movies.Find(id);
        db.Movies.Remove(movie);
        db.SaveChanges();
        return RedirectToAction("Index");
    }

    protected override void Dispose(bool disposing)
    {
        db.Dispose();
        base.Dispose(disposing);
    }
}
}

Посмотреть:

    @model MvcMovies.Models.Movie

@{
ViewBag.Title = "Create";
}

<h2>Create</h2>

<script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript">       </script>
<script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script>

@using (Html.BeginForm()) {
@Html.ValidationSummary(true)
<fieldset>
    <legend>Movie</legend>

    <div class="editor-label">
        @Html.LabelFor(model => model.Title)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Title)
        @Html.ValidationMessageFor(model => model.Title)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.ReleaseDate)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.ReleaseDate)
        @Html.ValidationMessageFor(model => model.ReleaseDate)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.Genre)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Genre)
        @Html.ValidationMessageFor(model => model.Genre)
    </div>

    <div class="editor-label">
        @Html.LabelFor(model => model.Price)
    </div>
    <div class="editor-field">
        @Html.EditorFor(model => model.Price)
        @Html.ValidationMessageFor(model => model.Price)
    </div>

    <p>
        <input type="submit" value="Create" />
    </p>
</fieldset>
}

<div>
@Html.ActionLink("Back to List", "Index")
</div>
public DbSet<Movie> Movies { get; set; }
}